#pragma once
#include "BlockDirectory.h"
#include "Subspace.h"
#include <wtf/SinglyLinkedListWithTail.h>
namespace JSC {
class IsoAlignedMemoryAllocator;
class IsoCellSet;
class IsoSubspace : public Subspace {
public:
JS_EXPORT_PRIVATE IsoSubspace(CString name, Heap&, HeapCellType*, size_t size);
JS_EXPORT_PRIVATE ~IsoSubspace();
size_t size() const { return m_size; }
Allocator allocatorFor(size_t, AllocatorForMode) override;
Allocator allocatorForNonVirtual(size_t, AllocatorForMode);
void* allocate(VM&, size_t, GCDeferralContext*, AllocationFailureMode) override;
void* allocateNonVirtual(VM&, size_t, GCDeferralContext*, AllocationFailureMode);
private:
friend class IsoCellSet;
void didResizeBits(size_t newSize) override;
void didRemoveBlock(size_t blockIndex) override;
void didBeginSweepingToFreeList(MarkedBlock::Handle*) override;
size_t m_size;
BlockDirectory m_directory;
LocalAllocator m_localAllocator;
std::unique_ptr<IsoAlignedMemoryAllocator> m_isoAlignedMemoryAllocator;
SentinelLinkedList<IsoCellSet, BasicRawSentinelNode<IsoCellSet>> m_cellSets;
};
ALWAYS_INLINE Allocator IsoSubspace::allocatorForNonVirtual(size_t size, AllocatorForMode)
{
RELEASE_ASSERT(size == this->size());
return Allocator(&m_localAllocator);
}
#define ISO_SUBSPACE_INIT(heap, heapCellType, type) ("Isolated " #type " Space", (heap), (heapCellType), sizeof(type))
}